Crane Weinman B Series, Installation And Operation Manual

8

  c.  Insert shaft assembly into the frame from the 

      coupling end until the space between the 

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 ange 

      of the bearing housing at end of the frame is 

      approximately 5/16”. Replace cap screws (213) 

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 nger-tight.

  d.  Place bearing lock washer (69) on the shaft and

      thread bearing lock nut (22) tight against the lock 

      washer. Bend tangs of the washer into the lock

      nut when tight.

  e.  Press shaft seal (49) into the bearing cover (37) 

      with lip of the seal extending toward the coupling. 

      Position bearing cover over the bearing housing 

      (33) and replace and tighten cap screws (332), 

      also replace jack screws with nuts (286 and 204), 

      but do not tighten.

SHAFT SLEEVE (14)

  1.  After old sleeve has been removed, clean shaft 

      with emery cloth and wipe thoroughy to remove 

      metal particles, also wipe inside of new sleeve to 

      be sure that it is clean.

  2.  Note that the new shaft sleeve is chamfered on 

      one end. This end will be installed against the 

      shoulder of the shaft (6).

  3.  Place the shaft sleeve in a preheated oven set at 

 650

0

F for 1-1/2 hours to allow sleeve to heat 

      uniformly and expand.

  4.  Place shaft in a vertical position in a vise, impeller

      end upward. Remove shaft sleeve from the oven 

      and drop sleeve, chamfered end 

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 rst, over the 

      shaft; making certain that the end of the sleeve is

      seated against the shaft shoulder.

  5. 

NOTE:

 This operation must be done rapidly 

      without allowing the shaft sleeve to cool. Do not 

      allow the sleeve to stop before it is properly seated.

      Hold Shaft sleeve snug against the shaft shoulder

      until shrink begins. Allow the sleeve to cool below

 100

0

F before proceeding with pump assembly.

  6. 

Replace 

de

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 ector (40) according to original 

 location.

PACKING BOX COVER (11) ASSEMBLY

  a.  To install new packing see Section D, Paragrah 3.

      Position packing box cover against frame (19)

      Be sure registered 

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 ange is fully-seated in power

 frame.

  b.  To install mechanical shaft seal, clean and 

      inspect all parts and remove all burrs, nicks, etc.

      from shaft and sleeve. 

CAUTION:

 Protect the 

      lapped faces of the seal during installation.

WITH TYPE 1 CRANE DOUBLE SEAL

  1.  Apply light oil to the outer surface of the 

      stationary seal seats and O-rings (89A) and press

      one seal seat into the seal gland (251), and the 

      other seal seat into the packing box cover (11). 

      Slide seal gland and gand gasket (259) onto the 

      shaft. (See Drawing).

  2.  Apply light oil to the inside of the seal bellow and 

      shaft sleeve (14) and slide the rotating seat 

      assembly (89B) onto the shaft sleeve.

  3.  Place packing box cover (11) against frame 

      (19). Be sure register is aligned and 

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 ange is 

      fully seated in power frame and in proper position.

      Then attach seal gland (251) to packing box 

      cover with belts and nuts (209-210). Tighten 

      securely. Seal may be tested for leakage by 

      applying 20 pounds of water ressure to the seal 

      cavity of packing box cover.

IMPELLER (2)

(Replace impeller ring (8), if furnished, before mounting the 
impeller).

  a.  Place impeller key (32) in shalt keyway and 

      sleeve gasket (38) against shaft sleeve (14) or on

      the impeller hub.

  b.  Spread a drop of Loctite #601 on shaft and 

      mount impeller (2) on the shaft. Block coupling 

      end of the shaft, then lay a block of wood over the

      suction inlet of the impeller and tap lightly on the 

      block until impeller is seated.

  c.  Assemble the impeller screw O-ring (272), 

      impeller washer (270) and the impeller screw 

      gasket (28) onto the impeller screw (26). Apply a 

      drop of Loctite #601 to the impeller screw and 

      mount the assembly on the end of the pump 

 shaft. 

Tighten 

securely.

  d.  Place casing gasket (73) on packing box cover 

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 ange and mount casing (1) on frame assembly, 

      then replace cap screws (212). 

NOTE: 

Casing (1), packing box cover (11) and power 

frame must be correctly aligned when reassembled. Be
sure registered 

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 ange of packing box cover is fully seated 

in power frame and that casing is aligned and fully-seated 
on packing box cover before tightening cap screws (212).

  e.  Place suction cover gasket (73) on suction cover 

      (9) and mount suction cover on casing, replacing 

      cap screws (215). Replace suction cover wear 

      ring (25), if required, before mounting suction 

      cover as above.

WEAR RINGS (8 and 25)

  a.  Suction Cover Ring (25). Remove all rust, scale 

      and dirt from ring seat. Place new ring into the 

      suction cover recess, aligning mounting holes 

      Insert and tighten machine screws (343), which 

 must 

be 

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 ush with the surface of the ring when 

      seated. Use new machine screws when replacing

 ring.

  b.  Impeller Ring (8). Remove all rust, scale and dirt

      from impeller ring seat. Press new ring onto 

      the impeler, making certain that it is fully seated 

      on the impeller. Drill and tap new holes for the 

      ring set screws and install the set screws.

FINAL ASSEMBLY

    a.  Reassembly pump on the base or base plate. 
        Mount driver and reassembly coupling. Replace 
        any tubing or piping required.
    b.  Adjust impeller clearance per Section D, part 2, 
        and place pump in operation per Section C.